#include "pthread_impl.h"

void __wait(volatile int *addr, volatile int *waiters, int val, int priv)
{
    int spins=100;
    if (priv) priv = FUTEX_PRIVATE;
    while (spins-- && (!waiters || !*waiters)) {
        if (*addr==val) a_spin();
        else return;
    }
    if (waiters) a_inc(waiters);
    while (*addr==val) {
        __syscall(SYS_futex, addr, FUTEX_WAIT|priv, val, 0) != -ENOSYS
        || __syscall(SYS_futex, addr, FUTEX_WAIT, val, 0);
    }
    if (waiters) a_dec(waiters);
}
